I cannot answer that, or chose not to comment 
Create a virtual "Group" called "presence detectors" and put all your devices in it. Map all your rules to the Group, and then you can change them out quickly and freely.
That same discussion just happened here, but about dashboards slowing. In order to troubleshot slow downs you would need to eliminate all the variable not just blame a symptom. If your getting a week, your doing better than me. I run lots of 3rd party apps/drivers, and heavily coded dashboards. I do not hold it against my hubs. I do daily automated reboots.
